On Wed, 10 Jun 2020 at 17:21, Thomas Munro <thomas.mu...@gmail.com> wrote: > I also heard from Andres that he likes this patch with his AIO > prototype, because of the way request merging works. So it seems like > there are several reasons to want it. > > But ... where should we get the maximum step size from? A GUC?
I guess we'd need to determine if other step sizes were better under any conditions. I guess one condition would be if there was a LIMIT clause. I could check if setting it to 1024 makes any difference, but I'm thinking it won't since I got fairly consistent results on all worker settings with the patched version. David
